78629123567 has 16 divisors (see below), whose sum is σ = 80670648960. Its totient is φ = 76597611552.

The previous prime is 78629123561. The next prime is 78629123569. The reversal of 78629123567 is 76532192687.

It is a cyclic number.

It is not a de Polignac number, because 78629123567 - 2²⁸ = 78360688111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78629123561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38002409 + ... + 38004477.

It is an arithmetic number, because the mean of its divisors is an integer number (5041915560).

Almost surely, 2^78629123567 is an apocalyptic number.

78629123567 is a deficient number, since it is larger than the sum of its proper divisors (2041525393).

78629123567 is a wasteful number, since it uses less digits than its factorization.

78629123567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022.

The product of its digits is 7620480, while the sum is 56.

The spelling of 78629123567 in words is "seventy-eight billion, six hundred twenty-nine million, one hundred twenty-three thousand, five hundred sixty-seven".